6533b871fe1ef96bd12d0d5e
RESEARCH PRODUCT
Intense mass-separated beams of halogens and beta-delayed neutron emission from heavy bromine isotopes
G. T. EwanKarl KratzH.l. RavnBjörn JonsonBjörn JonsonW. ZiegertP. HoffGunnar NymanP. O. LarssonP. O. Larssonsubject
PhysicsNuclear and High Energy PhysicsBromineNeutron emissionRadiochemistryThermal ionizationchemistry.chemical_elementchemistryIsotopes of bromineHalogenNeutronAtomic physicsSpectroscopyDelayed neutrondescription
Improved production yields of short-lived halogens were obtained from a ThO2 target, irradiated with 600 MeV protons, in combination with a negative surface ionization source. Mass-separated samples were studied by decay spectroscopy. Production yields of radioactive isotopes of chlorine, bromine, iodine and astatine are presented. Half-lives and relative neutron emission probabilities were measured for the heavy bromine isotopes89−92Br. Normalizing to earlier publishedPn values for89Br, the results are:89Br (4.30±0.14s,P n =13.6±0.8%),90Br (1.92±0.06s,P n =24.8±1.5%),91Br (0.53 ±0.03 s,P n =30.1 ±2.1%), and92Br (0.31 ±0.02 s,P n =34.6±2.5%). Energy spectra ofβ-delayed neutrons were measured.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1984-10-01 | Zeitschrift f�r Physik A Atoms and Nuclei |